1. .
Expand the product and integrate term by term.
2.
Use the substitution (be careful with the integration bounds!)
For first question:
You can see if the result is correct here http://www.wolframalpha.com/input/?i=integration+\int+(2x-3)(x%2B4)+dx
For Second question let :
You can check it here: http://www.wolframalpha.com/input/?i=integration+1%2F((x-2)^3)+dx+from+x+%3D+-2+to+-1